JPS5831733Y2 - Matsudo guard for industrial vehicles - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mudguard that prevents mud from being splashed by vehicle tires, and is particularly useful in industrial vehicles equipped with working equipment movably attached to the vehicle body, such as fork knots. This relates to mudguards placed nearby.

Mudguards on industrial vehicles are often at a height that makes it easy for people on the sides of the vehicle to put their hands on them, and they are often used as work steps, but mudguards are often used for lifting equipment on forklifts. Movable relative to the vehicle body like a mast (in the case of a mast, it can be tilted forward and backward)
If the device is installed near a work device attached to a mudguard, the work device is activated when a person is putting their hand on the mudguard or putting their foot on it as a work step, There is a risk of serious injury if your feet get caught between the mudguard and the work equipment.

Therefore, it is normal to provide a gap between the mudguard and the work equipment that is large enough to prevent the mudguard from being crushed even if a hand or foot is caught in it, and in some countries this gap is specified by safety standards. Some places do.

However, while industrial vehicles have a limited wheel width (the distance between the left and right tires), working equipment is required to have as wide a width as possible in terms of strength or operational stability. This is common, and it is often necessary to create a gap between the tire and the work equipment.

In this case, if we try to make the mudguard wide enough to sufficiently block mud from being splashed by the tires, it will be impossible to provide the above-mentioned gap required for safety between the mudguard and the work equipment. It becomes.

For this reason, conventionally, a gap large enough for safety has been provided between the mudguard and the work equipment at the expense of the mudguard's mud-splashing shielding performance. They had no choice but to accept the problem of the parts getting into the toe board of the driver's seat.

The present invention was developed against this background, and its purpose is to improve the mud protection performance of mudguards placed near the working equipment of industrial vehicles, and to improve the strength and operational stability of the working equipment. If a person gets their hand or foot caught between the mudguard and the work equipment without damaging the
It consists in avoiding danger to oneself.

In order to achieve the above-mentioned objectives, the present invention is an industrial vehicle equipped with a working device that is movable with respect to the vehicle body, by covering the upper part of the tires disposed near the working device, and by using the tire. A mudguard that shields mud from splashing and also serves as a work step, the mudguard having (A) high rigidity and strength fixed to the vehicle body with the side end on the side of the working device being separated from the working device by a required dimension; The parts and (
B) A part of the strength member is made to protrude from the side end toward the working device, so that the strength member is stacked and fixed so as to cover substantially the entire upper surface of the strength member while sufficiently covering the upper part of the tire. an elastically deformable flexible member;
The present invention is characterized in that an object smaller than the required size that is caught between the working device and the mudguard due to movement of the working device is prevented from being crushed by elastic deformation of the flexible member.

Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

1 and 2 are diagrams showing an embodiment of the present invention applied to a forklift, in which a front wheel 2 is disposed in a recess formed at the lower front of a frame (vehicle body) 1. ing.

The upper half of the rear half of the tire 3 of the front wheel 2 is covered by the frame 1, but the front half protrudes forward from the frame 1.

A mast 4 of a well-known elevating device is disposed between the portions of the left and right front wheels that protrude forward from the frame 1.

The mast 4 has a lower end pivotally connected to the wheel shaft of the front wheel 2 by a mounting bracket 10, and an intermediate portion connected to the frame 1 via a tilt cylinder 5.

The tilt cylinder 5 is pivotally connected to a bracket 6 fixed to the upper surface of the frame 1 by a pin 7, and the piston rod is pivotally connected to a bracket 8 fixed to the outer surface of the intermediate portion of the mast 4 by a pin 9. By rotating the mast 4 around the wheel axis of the front wheel 2, the mast 4 is tilted forward or backward.

This tilt cylinder 5 passes through a front protector 11 fixed to the upper surface of the front end of the frame 1, and swings around a pin 7 at a certain angle as the mast 4 tilts back and forth. The protector 11 has a second
As shown in the figure, an opening 12 that is considerably thicker than the diameter of the tilt cylinder 5 is provided.

As described above, the front half of the tire 3 of the front wheel 2 is made to protrude forward from the frame 1, so a mudguard 20 is provided to block mud thrown up by this part.

The mudguard 20 serves as a work step as well as shields mud from splashing, and as shown enlarged in FIGS. 3 to 5, the mudguard 20 is made of a high-rigidity steel plate strength member 21 and an elastically deformable rubber member. It is composed of a flexible member 22.

The strength member 21 is a member formed by pressing a steel plate so that the cross-sectional shape has a U-shaped prison shape as shown in FIG. One end is welded to the frame 1 so as to be spaced apart from the mast 4 by a predetermined distance when the mast 4 is tilted backward), and protrudes forward from the front edge of the frame 1.

On the other hand, the flexible member 22 has a substantially U-shaped cross-sectional shape, which is the same as the strength member 21, but its width is wider than the strength member 21.

The flexible member 22 is manufactured by integrally molding rubber, and a relatively small mounting plate 23 made of a steel plate is welded to the lower surface thereof.

The flexible member 22 has a partially symmetrical shape with respect to its center line, and the mounting plate 23 is also welded to the center position in the left-right direction.

The flexible member 22 is in a state where it is biased toward the center of the vehicle with respect to the strength member 21, that is, a portion of the strength member 21 is protruded from the mast 4 side end toward the mast 4 side, and the flexible member 22 is positioned at least above the tire 3. The mounting plate 23 is fixed to the strength member 21 with bolts 24 in a state where it is sufficiently covered in the tire width direction.

A partition wall 25 is provided at the front of the back surface of the flexible member 22, as shown in FIG. Groove 2
7 and 28 are formed, and when the flexible member 22 is fixed to the strength member 21, these fitting grooves 27 and 28 are fitted to the edge of the strength member 21, and the flexible member 22 is connected to the strength member 21. It plays the role of firmly fixing the

Further, the upper surface of the flexible member 22 has an uneven surface to prevent slipping when the foot is placed on the foot.

After all, the mudguard 20 configured as described above is
The strength member 21 and the flexible member 2 are double stacked and are formed only by the strength part having a rigidity that does not easily bend even when a person rides on it, and the flexible member 22, and can be elastically deformed with a relatively small force. The upper part of the front half of the tire 3 is sufficiently covered by the strong part and the flexible part as shown in FIG. Since the tires 3 cannot be sufficiently covered, it is possible to completely prevent mud splashed onto the tires 3 from entering the driver's cabin etc. from the opening 12 for the tilt cylinder 5 provided in the front protector 11. .

Of course, in this case, the gap A formed between the mudguard 20 and the mast 4 will be narrower than in a conventional forklift, but the part of the mudguard 20 on the mast 4 side is relatively narrow as described above. Because it is a flexible part that can be elastically deformed with a small force, the mudguard 20
Even if your hand is caught between the mast 4 and the mast 4 that has been tilted backwards, the elastic deformation of the flexible portion will prevent your hand from being crushed.

The above-mentioned required dimensions are determined in consideration of the size of objects that are likely to be pinched, such as hands or feet.

In this way, the present embodiment can completely prevent mud from splashing into the driver's cabin etc. due to the tires 3, and maintain the width of the lifting device as wide as the conventional one to improve the strength of the device or the operational stability. This has the excellent effect of ensuring the safety of workers without causing any damage, but it also has various other effects.

For example, the flexible member 22 of this embodiment has a symmetrical shape with respect to the center line, and the mounting position is simply shifted toward the center of the vehicle with respect to the strength member 21, so that it can be used for both the left and right sides, thereby reducing manufacturing costs. This has the effect of making parts management easier, and the flexible member 22 has the strength of the strength member 2.
The mudguard is large enough to cover the entire top surface of the mudguard, and the top surface has an uneven surface, which has the effect of allowing it to double as a non-slip mat when you put your foot on the mudguard during inspection and maintenance.

In addition, in this embodiment, the strength member 21 is manufactured separately from the frame 1 and then fixed to the frame 1 by welding, so compared to the conventional frame where it is integrally press-formed up to the mudguard part. This has the effect of making it possible to manufacture from a much smaller plate material and making press working easier.

In other words, in the past, the frame and mudguard were constructed in one piece by cutting out a material in the shape shown by the solid line in Figure 6 from a plate and bending it into the shape shown in Figures 7 and 8. However, in this example, since the mudguard part was made separately, the material had the shape shown by the two-dot chain line in Fig. 6, and only the diagonally shaded part in Fig. 6 needed to be made of a small plate. In addition, in the mudguard part, the dimension C of the bending part is larger than the dimension B, so in the past it was difficult to bend this part, but in this embodiment, this difficult part to bend is shortened. This made press working easier.

The embodiments detailed above are merely illustrative, and the present invention is not limited thereto.

For example, as shown in FIG. 9, an elastically deformable flexible member 32 made of rubber or soft synthetic resin is welded to the working device side end of a highly rigid strength member 31 made of metal or reinforced plastic. Alternatively, it is also possible to bolt the bonded mudguard 30 to the frame 1, and furthermore, as in the conventional case, the end of the working device side of the mudguard, which is integrally constructed with the frame, is formed so as to be separated from the working device by a predetermined distance. The purpose can also be achieved by fixing the flexible member to the flexible member.

Since the present invention is as described in detail above, the strength of the mudguard work step is 21.31.
The width of the working equipment can be made as wide as possible within the space limited by the gap between the left and right tires, and the mudguard can maintain the width of the working equipment as much as possible while maintaining the strength or operational stability of the working equipment as before. It covers the area above the nearby tires with sufficient space to completely block mud from being splashed by the tires, and also protects the area in the event that someone inadvertently gets their hands caught in the gap between the working equipment and the mudguard. This also has an excellent effect of preventing the hands from being crushed.

[Brief explanation of drawings]

FIG. 1 is a side view of the main parts of a forklift including an embodiment of the present invention, and FIG. 2 is a plan view of the main parts. FIG. 3 is a sectional view taken along line III--III in FIG. 2. FIG. 4 is a view from IV in FIG. 1. Figure 5 is the first
It is a sectional view taken along ■-■ in the figure. FIG. 6 is an explanatory diagram showing a comparison of the sizes of the raw material plates of a conventional frame and a frame according to an embodiment of the present invention. 7 and 8 are a side view and a rear view, respectively, of a conventional frame. FIG. 9 is a diagram corresponding to FIG. 2 showing another embodiment of the present invention. 1: Frame, 2: Front wheel, 3: Tire, 4: Mast, 5
: Tilt cylinder, 11: Front protector, 12
: opening, 20, 30: mudguard, 21.31: strength member, 22, 32: flexible member, 23: mounting plate.

Claims (2)

[Scope of utility model registration request] (1) In an industrial vehicle equipped with a working device that is movable with respect to the vehicle body, the upper part of the tires installed near the working device is covered to shield mud from splashing by the tires and also serve as a working step. A mudguard comprising: a high-rigidity strength member fixed to the vehicle body with a side end on the side of the work equipment being separated from the work equipment by a predetermined distance; a flexible member that can be elastically deformed and fixed to overlap the strength member with a portion protruding toward the device side and sufficiently covering the upper part of the tire, and the flexible member can be elastically deformed and fixed by overlapping the strength member with a portion thereof protruding toward the device, and the flexible member can be elastically deformed and A mudguard for an industrial vehicle, characterized in that an object having a size smaller than the required size, which is sandwiched between a working device and the mudguard, is prevented from being crushed by elastic deformation of the flexible member. (2) The flexible member has a shape that is bilaterally symmetrical with respect to its center line, and the flexible member has either the left or right end selectively protruding from the working device side end of the strength member. The mudguard according to claim 1, which is fixed to a strength member and is commonly used for both left and right mudguards.